tentukan nilai x dan y menggunakan cara subtitusi dan eliminasi
3(2x + 1) + 5y = -5
-7x - 4(y + 3) = -10
6x + 3 + 5y = -5 |× 4
-7x - 4y - 12 = -10 |× 5
24x + 20y + 12 = -20
-35x - 20y - 60 = -50 +
-11x - 48 = -70
-11x = -70 + 48
-11x = -22
x = 2
6x + 3 + 5y = -5
6.(2) + 3 + 5y = -5
12 + 3 + 5y = -5
15 + 5y = -5
5y = -5 - 15
5y = -20
y = -4
[answer.2.content]
